A silk weaving wastewater treatment device

Abstract

The application discloses a silk weaving wastewater treatment device, and relates to the technical field of silk weaving wastewater treatment and resource utilization. The silk weaving wastewater treatment device comprises a pretreatment box, a biological treatment box and a sedimentation and filtration box arranged in sequence from top to bottom. The biological treatment box is provided with a gas stripping circulating fluidization mechanism. The gas stripping circulating fluidization mechanism comprises an outer cylinder and an inner cylinder which are coaxially arranged and have upper and lower openings. A spiral blade is fixed between the outer cylinder and the inner cylinder to form a spiral channel. The inner cylinder is internally formed with a gas stripping upward zone, and the spiral channel is formed with a filler sinking zone. An aeration mechanism is arranged below the inner cylinder to generate micro-bubbles to drive the filler to ascend along the inner cylinder and sink along the spiral channel, thereby forming an orderly circulating fluidization. The pretreatment box is provided with an anti-blocking mechanism and a water retaining mechanism. The device can uniformly distribute the suspended filler and eliminate short flow and aeration dead zones, thereby promoting the aging biological membrane to fall off and renew and improving the biological treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of silk weaving wastewater treatment and resource utilization technology, and particularly to a silk weaving wastewater treatment device. Background Technology

[0002] The silk weaving process generates wastewater containing pollutants such as sericin, dyes, sizing agents, and fiber debris. This type of wastewater typically requires multiple treatment stages, including pretreatment, biological treatment, sedimentation and filtration, and disinfection, before it can be discharged in compliance with standards or reused. In the biological treatment stage, suspended packing material is often added to the biological treatment tank in conjunction with aeration. The microbial film attached to the surface of the packing material degrades the organic matter in the wastewater, while aeration simultaneously provides oxygen to the microorganisms and agitates the wastewater.

[0003] For example, Chinese patent document CN208561849U discloses a moving bed biofilm reactive wastewater treatment system, which adds suspended packing material and an aeration device to the reaction tank. The system relies on the biofilm attached to the surface of the packing material to degrade organic pollutants in the wastewater, achieving biological purification of the wastewater. However, in this device, the suspended packing material is prone to localized accumulation in the aeration area under the propulsion of the aeration airflow, causing short-circuiting of the water flow within the tank, uneven aeration distribution, and some packing material failing to fully contact the wastewater and oxygen. Simultaneously, the collision and friction between the packing material is weak, making it difficult for the aged biofilm on the surface to naturally detach and renew, hindering the sustained maintenance of microbial activity and limiting the overall biological treatment efficiency. Therefore, we propose a silk weaving wastewater treatment device. Summary of the Invention

[0004] The purpose of this invention is to provide a wastewater treatment device for silk weaving, which can solve the problems of suspended packing material in the biological treatment chamber easily accumulating locally under aeration, causing short-circuiting of water flow and uneven aeration, thus affecting the efficiency of biological treatment; and the problem that the aged biofilm on the surface of the packing material is not easy to detach and renew.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a silk weaving wastewater treatment device, comprising a sedimentation filter box, the device further comprising: a biological treatment box located above and connected to the sedimentation filter box, and a pretreatment box fixedly installed on the top of the biological treatment box; The biological treatment tank is equipped with an airlift circulating fluidization mechanism and an aeration mechanism located below the airlift circulating fluidization mechanism.

[0006] The gas circulation fluidization mechanism includes an outer cylinder and an inner cylinder disposed inside the biological treatment tank. The inner cylinder is located inside the outer cylinder and the outer cylinder and the inner cylinder are coaxially arranged. The upper and lower ends of the outer cylinder and the inner cylinder are both open. The upper end of the outer cylinder is fixedly connected to the inner top of the biological treatment tank. The upper end of the inner cylinder is lower than the upper end of the outer cylinder. A spiral blade is fixedly installed between the outer cylinder and the inner cylinder, forming a spiral channel between them. The internal space of the inner cylinder constitutes the air lifting rising zone, and the spiral channel constitutes the packing sinking zone. The aeration mechanism is located below the inner cylinder.

[0007] Preferably, the aeration mechanism includes an annular pipe disposed at the bottom of the inner side of the biological treatment tank. At least two sets of microporous aeration discs communicating with the interior of the annular pipe are fixedly installed on the upper outer surface of the annular pipe. Each set of microporous aeration discs is evenly distributed in a ring along the annular pipe. Each microporous aeration disc is located below the outer cylinder. At least two sets of support rods are fixedly installed between the annular pipe and the bottom of the inner side of the biological treatment tank. An air inlet pipe communicating with the interior of the annular pipe is fixedly installed on one side of the outer surface of the annular pipe. The air inlet pipe passes through one side of the biological treatment tank and extends to the outside of one side of the biological treatment tank. A bracket is fixedly installed on one side of the outer surface of the biological treatment tank. An aeration pump is fixedly installed on the top of the bracket. A connecting pipe communicating with the output end of the aeration pump is fixedly installed on the aeration pump. The end of the connecting pipe away from the aeration pump is fixedly connected and communicates with the air inlet pipe extending to the outside of one side of the biological treatment tank.

[0008] Preferably, it also includes an anti-clogging mechanism, which is disposed on one side of the pretreatment box. The anti-clogging mechanism includes an electric push rod fixedly installed on the outer surface of one side of the pretreatment box. The free end of the electric push rod penetrates through one side wall of the pretreatment box and extends into the pretreatment box. A push plate is fixedly installed on the inner wall of one side of the pretreatment box at the free end of the electric push rod. A rubber scraper is fixedly installed at the bottom of the push plate. The rubber scraper is in contact with the inner bottom of the pretreatment box. A stepped mounting groove is formed through the bottom of the pretreatment box. It also runs through the top of the biological treatment box. A coarse filter plate, flush with the bottom of the inner side of the pretreatment box, is fixedly installed in the installation slot. A sunken sludge collection box is integrally formed on the bottom of the other side of the pretreatment box. A pull-out groove is opened on the front side of the sludge collection box. A pull-out collection box is placed on the bottom of the inner side of the sludge collection box. The pull-out collection box can move back and forth along the pull-out groove. A set of pin seats is fixedly installed on the front outer surface of the pull-out collection box and the front outer surface of the pretreatment box. The two sets of pin seats are attached vertically, and a pin is inserted through both sets of pin seats.

[0009] Preferably, it also includes a water-blocking mechanism, which includes a strip groove formed at the bottom of the inner side of the pretreatment tank. The strip groove is set close to the sludge collection box. A water-blocking plate is slidably installed in the strip groove. The water-blocking plate protrudes from the bottom of the inner side of the pretreatment tank and its cross-section is wedge-shaped. At least two sets of return springs are fixedly installed between the bottom of the water-blocking plate and the bottom of the inner side of the strip groove.

[0010] Preferably, a quartz sand filter layer is provided in the middle section of the sedimentation filter box. The quartz sand filter layer is fixedly installed on the inner walls of the sedimentation filter box. The upper part of the quartz sand filter layer is the sedimentation chamber, and the lower part of the quartz sand filter layer is the disinfection chamber. The quartz sand filter layer includes a filter box body. The top of the filter box body is inclined and fixed with an inclined water passage cover plate by bolts. Densely distributed water passage holes are opened through the water passage cover plate and the bottom of the filter box body. The filter box body is filled with quartz sand.

[0011] Preferably, a drain pipe is fixedly installed between the bottom of the biological treatment tank and the top of the sedimentation and filtration tank. The upper and lower ends of the drain pipe are respectively connected to the interior of the biological treatment tank and the sedimentation and filtration tank. A drain solenoid valve is fixedly installed on the drain pipe. At least two sets of support columns are fixedly installed between the top of the sedimentation and filtration tank and the bottom of the biological treatment tank.

[0012] Preferably, a sludge discharge pipe communicating with the sedimentation chamber is fixedly installed on one outer surface of the sedimentation filter box, and a sludge discharge valve is fixedly installed at the tail end of the sludge discharge pipe.

[0013] Preferably, at least two sets of ultraviolet lamps are fixedly installed on the bottom inner side of the disinfection chamber inside the sedimentation filter box.

[0014] Preferably, the top of the pretreatment tank is fixedly installed with an inlet pipe communicating with its interior, and the other outer surface of the sedimentation filter tank is fixedly installed with a recovery pipe communicating with the disinfection chamber, and a return water solenoid valve is fixedly installed on the recovery pipe.

[0015] Preferably, both the sedimentation filter box and the biological treatment box have access ports on their front sides, and access plates are fixed to the access ports with bolts.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This silk weaving wastewater treatment device uses microbubbles generated by the aeration mechanism to rise in the inner cylinder, creating an airlift effect. This lifts the packing material along the water flow in the inner cylinder. After reaching the top, the packing material enters the spiral channel formed by the spiral blades between the outer and inner cylinders and sinks back to the bottom, forming an orderly internal rising and external sinking circulating fluidization. This ensures that the packing material is evenly distributed in the biological treatment tank without accumulation, eliminating water flow short-circuiting and aeration dead zones. At the same time, the collision and friction between the packing material promotes the shedding and renewal of the aging biofilm, significantly improving oxygen mass transfer efficiency and biological treatment effect.

[0017] In this silk weaving wastewater treatment device, the anti-clogging mechanism uses an electric push rod to drive a push plate to reciprocate along the bottom of the pretreatment tank. A rubber scraper adheres to the bottom, scraping away the fiber impurities trapped by the coarse filter plate and pushing them into the pull-out collection box. In the water-blocking mechanism, a water-blocking plate protrudes under the support of a return spring to prevent wastewater from flowing into the collection box. During scraping, the push plate presses down on the water-blocking plate, causing it to retract into the strip groove, allowing the impurities to smoothly enter the pull-out collection box. After scraping is completed, the water-blocking plate automatically resets. Wastewater and impurities are effectively separated, and there is no water leakage during the scraping process, ensuring reliable anti-clogging.

[0018] This silk weaving wastewater treatment device features a quartz sand filter layer positioned in the middle of the sedimentation filter tank, separating the sedimentation chamber from the disinfection chamber. After sedimentation, the wastewater enters the filter tank through the water passage holes of the water passage cover for deep quartz sand filtration. Ultraviolet lamps sterilize the purified water in the disinfection chamber. The drain solenoid valve, return solenoid valve, and sludge discharge valve control the timing of draining, purified water recovery, and sludge discharge, respectively, to achieve quantitative batch treatment. Support columns ensure a stable connection between the biological treatment tank and the sedimentation filter tank, and an inspection plate facilitates internal maintenance. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a left-side perspective view of the present invention; Figure 2 This is a right-side perspective view of the present invention; Figure 3 This is a frontal perspective view of the present invention; Figure 4 This is a left perspective sectional view of the biological treatment box of the present invention; Figure 5 This is a right-side perspective sectional view of the biological treatment box of the present invention; Figure 6 This is a schematic diagram of the internal structure of the pretreatment box of the present invention; Figure 7 This is a front sectional view of the pretreatment box of the present invention; Figure 8 This is a schematic diagram of the internal structure of the sedimentation filter box of the present invention.

[0020] Attached reference numerals: 1. Sedimentation filter box; 2. Biological treatment box; 3. Pretreatment box; 4. Airlift circulating fluidization mechanism; 41. Outer cylinder; 42. Inner cylinder; 43. Spiral blade; 44. Aeration mechanism; 441. Annular pipe; 442. Microporous aeration disc; 443. Support rod; 444. Air inlet pipe; 445. Bracket; 446. Aeration pump; 447. Connecting pipe; 5. Anti-clogging mechanism; 51. Electric push rod; 52. Push plate; 53. Rubber scraper; 6. Water blocking mechanism; 61. 62. Strip groove; 63. Water baffle; 74. Return spring; 75. Quartz sand filter layer; 76. Filter box; 77. Water cover plate; 78. Water passage hole; 8. Drain pipe; 9. Drain solenoid valve; 10. Support column; 11. Coarse filter plate; 12. Sludge collection box; 13. Pull-out collection box; 14. Pin seat; 15. Pin; 16. Sludge discharge pipe; 17. Sludge discharge valve; 18. Ultraviolet lamp tube; 19. Water inlet pipe; 20. Recovery pipe; 21. Return water solenoid valve; 22. Inspection plate. Detailed Implementation

[0021] Please see Figure 1-8 This invention provides a technical solution: a silk weaving wastewater treatment device, including a sedimentation filter tank 1. In the biological treatment stage of silk wastewater, suspended packing material is easily accumulated locally under the action of aeration airflow, causing short-circuiting of water flow and uneven aeration, resulting in a decrease in biological treatment efficiency. A biological treatment tank 2 is arranged directly above the sedimentation filter tank 1, and a pretreatment tank 3 is fixedly installed on the top of the biological treatment tank 2. The three are arranged sequentially from top to bottom to form an integrated treatment body. The biological treatment tank 2 is equipped with an air-lift circulating fluidization mechanism 4. The air-lift circulating fluidization mechanism 4 includes components disposed in the biological treatment tank 2. The biological treatment tank 2 has an outer cylinder 41 and an inner cylinder 42 inside. The inner cylinder 42 is located inside the outer cylinder 41 and the outer cylinder 41 and the inner cylinder 42 are coaxially arranged. The upper and lower ends of the outer cylinder 41 and the inner cylinder 42 are open. The upper end of the outer cylinder 41 is fixedly connected to the inner top of the biological treatment tank 2. The upper end of the inner cylinder 42 is lower than the upper end of the outer cylinder 41. The spiral blades 43 are fixedly installed between the outer cylinder 41 and the inner cylinder 42, forming a spiral channel between them. The internal space of the inner cylinder 42 constitutes the air lifting rising zone, and the spiral channel constitutes the packing sinking zone. The aeration mechanism 44 is provided on the biological treatment tank 2.

[0022] The key to achieving an orderly circulation of internal rising and external sinking of the packing material lies in the continuous generation of rising bubbles at the bottom of the inner cylinder 42, forming an airlift driving force. The aeration mechanism 44 includes an annular pipe 441 located at the bottom of the inner side of the biological treatment tank 2. At least two sets of microporous aeration discs 442 communicating with the interior of the annular pipe 441 are fixedly installed on the upper outer surface of the annular pipe 441. Each set of microporous aeration discs 442 is evenly distributed in a ring along the annular pipe 441. Each microporous aeration disc 442 is located below the outer cylinder 41 and directly opposite the bottom opening of the inner cylinder 42. At least two sets of support rods 443 are fixedly installed between the annular pipe 441 and the bottom of the inner side of the biological treatment tank 2, so that the annular pipe 441 is stably suspended in the biological treatment tank. Above the bottom inside the box 2; an air inlet pipe 444 communicating with the inside is fixedly installed on the outer surface of one side of the annular pipe 441. The air inlet pipe 444 passes through one side of the biological treatment box 2 and extends to the outside of one side of the biological treatment box 2. A bracket 445 is fixedly installed on the outer surface of one side of the biological treatment box 2. An aeration pump 446 is fixedly installed on the top of the bracket 445. A connecting pipe 447 communicating with its output end is fixedly installed on the aeration pump 446. The end of the connecting pipe 447 away from the aeration pump 446 is fixedly connected and communicates with the air inlet pipe 444 extending to the outside of one side of the biological treatment box 2. Air supplied by the aeration pump 446 enters the annular pipe 441 through the connecting pipe 447 and the air inlet pipe 444.

[0023] Before entering the biological treatment tank 2, wastewater needs to undergo pretreatment to remove large particulate impurities such as fibers. Accumulated impurities can affect the flow capacity. The anti-clogging mechanism 5 is located on one side of the pretreatment tank 3. The anti-clogging mechanism 5 includes an electric push rod 51 fixedly installed on the outer surface of one side of the pretreatment tank 3. The free end of the electric push rod 51 penetrates one side wall of the pretreatment tank 3 and extends into the pretreatment tank 3. A push plate 52 is fixedly installed on the inner wall of one side of the pretreatment tank 3 at the free end of the electric push rod 51. A rubber scraper 53 is fixedly installed at the bottom of the push plate 52, and the rubber scraper 53 is in contact with the inner bottom of the pretreatment tank 3. A stepped-edge mounting groove is opened through the bottom of the pretreatment tank 3, and the mounting groove also penetrates the top of the biological treatment tank 2. A coarse filter plate 11, flush with the bottom of the inner side of the pretreatment box 3, is fixedly installed in the mounting groove. The coarse filter plate 11 is used to intercept large particles such as fibers. A sunken sludge collection box 12 is integrally formed on the bottom of the other side of the pretreatment box 3. A pull-out groove is opened on the front side of the sludge collection box 12. A pull-out collection box 13 is placed on the bottom of the inner side of the sludge collection box 12. The pull-out collection box 13 can move back and forth along the pull-out groove. A set of pin seats 14 are fixedly installed on the outer front surface of the pull-out collection box 13 and the outer front surface of the pretreatment box 3. The two sets of pin seats 14 are attached vertically. A pin 15 is inserted through the two sets of pin seats 14. The pin 15 locks the pull-out collection box 13 in the sludge collection box 12 to prevent it from sliding out during transportation or processing.

[0024] When the coarse filter plate 11 traps impurities, a small amount of wastewater may flow along with the impurities to one side of the sludge collection box 12 and enter the pull-out collection box 13, causing mixed flow. The water-blocking mechanism 6 includes a strip groove 61 opened at the bottom of the inner side of the pretreatment tank 3. The strip groove 61 is set close to the sludge collection box 12. A water-blocking plate 62 is slidably installed in the strip groove 61. The water-blocking plate 62 protrudes from the bottom of the inner side of the pretreatment tank 3 and its cross-section is wedge-shaped. Under normal conditions, the protruding water-blocking plate 62 forms a barrier in front of the inlet of the sludge collection box 12, preventing wastewater from flowing into the sludge collection box 12. At least two sets of return springs 63 are fixedly installed between the bottom of the water-blocking plate 62 and the bottom of the inner side of the strip groove 61. The return springs 63 support the water-blocking plate 62 to keep it in a protruding state.

[0025] After biological treatment, the wastewater enters the sedimentation filter tank 1 and needs to be further decomposed and disinfected. The sedimentation filter tank 1 has a quartz sand filter layer 7 in the middle section. The quartz sand filter layer 7 is fixedly installed on the inner walls of the sedimentation filter tank 1. The upper part of the quartz sand filter layer 7 is the sedimentation chamber, and the lower part of the quartz sand filter layer 7 is the disinfection chamber. The quartz sand filter layer 7 includes a filter box body 71. The top of the filter box body 71 is inclined and fixed with an inclined water passage cover 72 by bolts. The water passage cover 72 and the bottom of the filter box body 71 are both provided with densely distributed water passage holes 73. The filter box body 71 is filled with quartz sand. After sedimentation, the wastewater enters the filter box body 71 through the water passage holes 73 of the water passage cover 72, is filtered by the quartz sand, and is discharged through the water passage holes 73 at the bottom.

[0026] A drain pipe 8 is fixedly installed between the bottom of the biological treatment tank 2 and the top of the sedimentation and filtration tank 1. The upper and lower ends of the drain pipe 8 are connected to the interior of the biological treatment tank 2 and the sedimentation and filtration tank 1, respectively. A drain solenoid valve 9 is fixedly installed on the drain pipe 8. The drain solenoid valve 9 controls the quantitative discharge of the treated wastewater in the biological treatment tank 2 into the sedimentation and filtration tank 1. At least two sets of support columns 10 are fixedly installed between the top of the sedimentation and filtration tank 1 and the bottom of the biological treatment tank 2. The support columns 10 support the weight of the biological treatment tank 2 and the pretreatment tank 3 above.

[0027] A sludge discharge pipe 16 communicating with the sedimentation chamber is fixedly installed on one outer surface of the sedimentation filter box 1. A sludge discharge valve 17 is fixedly installed at the tail end of the sludge discharge pipe 16. The sludge settled in the sedimentation chamber is periodically discharged by the sludge discharge pipe 16 through the sludge discharge valve 17.

[0028] At least two sets of ultraviolet lamps 18 are fixedly installed on the bottom inner side of the disinfection chamber inside the sedimentation filter box 1. The ultraviolet lamps 18 irradiate the filtered purified water to sterilize and disinfect it.

[0029] The top of the pretreatment tank 3 is fixedly installed with an inlet pipe 19 that communicates with its interior, and wastewater is injected into the pretreatment tank 3 through the inlet pipe 19; the outer surface of the other side of the sedimentation and filtration tank 1 is fixedly installed with a recovery pipe 20 that communicates with the disinfection chamber, and a return water solenoid valve 21 is fixedly installed on the recovery pipe 20. The disinfected purified water is recovered and reused through the recovery pipe 20 and controlled by the return water solenoid valve 21.

[0030] Both the sedimentation filter box 1 and the biological treatment box 2 have access ports on their front sides. A maintenance plate 22 is fixedly installed at the access port by bolts. When it is necessary to maintain the internal air-lift circulating fluidization mechanism 4 or the quartz sand filter layer 7, the bolts can be unscrewed and the maintenance plate 22 can be removed to operate through the access port.

[0031] Working principle: Wastewater is injected into the pretreatment tank 3 through the inlet pipe 19. Large particles such as fibers are intercepted and retained on the surface of the coarse filter plate 11. The wastewater enters the biological treatment tank 2 through the filter holes of the coarse filter plate 11. The aeration pump 446 is started, and the airflow enters the annular pipe 441 through the connecting pipe 447 and the air inlet pipe 444. Microbubbles are evenly released by each microporous aeration disc 442. The microbubbles rise in the inner cylinder 42 to form an air lift effect, which drives the packing and wastewater to rise along the inner cylinder 42. After rising to the top of the inner cylinder 42, they overflow into the spiral channel formed by the spiral blades 43 between the outer cylinder 41 and the inner cylinder 42. The packing sinks down along the spiral channel and returns to the bottom of the biological treatment tank 2, forming an orderly circulating fluidization with internal rising and external settling. The biofilm degrades the organic matter in the wastewater to complete the biological treatment. The drain solenoid valve 9 is opened, and the treated wastewater enters the sedimentation chamber of the sedimentation filter tank 1 through the drain pipe 8. The suspended solids in the wastewater settle in the sedimentation chamber. Gravity sedimentation causes sludge to be periodically discharged via sludge discharge pipe 16 and sludge discharge valve 17. Supernatant enters the quartz sand layer in the filter box 71 through the water passage 73 of the water cover plate 72 for deep filtration. The filtered water enters the disinfection chamber, where it is sterilized by ultraviolet lamp tube 18. After the return water solenoid valve 21 is opened, the water is recycled through the recovery pipe 20. When the fiber impurities trapped on the surface of the coarse filter plate 11 accumulate to a certain amount, the electric push rod 51 is activated to drive the push plate 52 to move along the bottom of the inner side of the pretreatment box 3. The rubber scraper 53 scrapes off the impurities by adhering to the bottom surface. During scraping, the push plate 52 presses down on the baffle plate 62, causing it to retract into the strip groove 61. The impurities pass over the baffle plate 62 and are pushed into the pull-out collection box 13 in the sludge collection box 12. After scraping is completed, the electric push rod 51 returns, and the baffle plate 62 resets under the action of the return spring 63 to block the wastewater again. After pulling out the pin 15, the pull-out collection box 13 is pulled out along the pull-out groove to clean the impurities.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A wastewater treatment device for silk weaving, comprising a sedimentation and filtration tank (1), characterized in that, The device further includes a biological treatment box (2) located above the sedimentation filter box (1) and connected to the sedimentation filter box (1), and a pretreatment box (3) is fixedly installed on the top of the biological treatment box (2). An airlift circulating fluidization mechanism (4) and an aeration mechanism (44) located below the airlift circulating fluidization mechanism (4) are provided inside the biological treatment tank (2).

2. The silk weaving wastewater treatment device as described in claim 1, characterized in that: The gas circulation fluidization mechanism (4) includes an outer cylinder (41) and an inner cylinder (42) disposed inside the biological treatment tank (2). The inner cylinder (42) is located inside the outer cylinder (41) and the outer cylinder (41) and the inner cylinder (42) are coaxially arranged. The upper and lower ends of the outer cylinder (41) and the inner cylinder (42) are both open. The upper end of the outer cylinder (41) is fixedly connected to the top of the inner side of the biological treatment tank (2). The upper end of the inner cylinder (42) is lower than the upper end of the outer cylinder (41). A spiral blade (43) is fixedly installed between the outer cylinder (41) and the inner cylinder (42) and forms a spiral channel between them. The internal space of the inner cylinder (42) constitutes the air lifting rising zone. The spiral channel constitutes the packing sinking zone. The aeration mechanism (44) is located below the inner cylinder.

3. The silk weaving wastewater treatment device as described in claim 2, characterized in that: The aeration mechanism (44) includes an annular pipe (441) located at the bottom of the inner side of the biological treatment tank (2). At least two sets of microporous aeration discs (442) communicating with the interior of the annular pipe (441) are fixedly installed on the upper outer surface of the annular pipe (441). Each set of microporous aeration discs (442) is evenly distributed in a ring along the annular pipe (441). Each microporous aeration disc (442) is located below the outer cylinder (41). At least two sets of support rods (443) are fixedly installed between the annular pipe (441) and the bottom of the inner side of the biological treatment tank (2). One side of the outer surface of the annular pipe (441) is fixedly installed with... There is an air inlet pipe (444) that communicates with the inside of the biological treatment box (2). The air inlet pipe (444) passes through one side of the biological treatment box (2) and extends to the outside of one side of the biological treatment box (2). A bracket (445) is fixedly installed on the outer surface of one side of the biological treatment box (2). An aeration pump (446) is fixedly installed on the top of the bracket (445). A connecting pipe (447) that communicates with its output end is fixedly installed on the aeration pump (446). The end of the connecting pipe (447) away from the aeration pump (446) is fixedly connected to and communicates with the air inlet pipe (444) that extends to the outside of one side of the biological treatment box (2).

4. The silk weaving wastewater treatment device according to claim 3, characterized in that: It also includes an anti-blocking mechanism (5), which is located on one side of the pretreatment box (3). The anti-blocking mechanism (5) includes an electric push rod (51) fixedly installed on the outer surface of one side of the pretreatment box (3). The free end of the electric push rod (51) penetrates through one side wall of the pretreatment box (3) and extends into the pretreatment box (3). A push plate (52) is fixedly installed on the inner wall of one side of the pretreatment box (3) at the free end of the electric push rod (51). A rubber scraper (53) is fixedly installed at the bottom of the push plate (52). The rubber scraper (53) is in contact with the inner bottom of the pretreatment box (3). A stepped mounting groove is opened through the bottom of the pretreatment box (3). The mounting groove is also A coarse filter plate (11) flush with the bottom of the inner side of the pretreatment box (3) is fixedly installed in the mounting slot through the top of the biological treatment box (2). A sunken sludge collection box (12) is integrally formed on the bottom of the other side of the pretreatment box (3). A pull-out groove is opened on the front side of the sludge collection box (12). A pull-out collection box (13) is placed on the bottom of the inner side of the sludge collection box (12). The pull-out collection box (13) can move back and forth along the pull-out groove. A set of pin seats (14) is fixedly installed on the outer front surface of the pull-out collection box (13) and the outer front surface of the pretreatment box (3). The two sets of pin seats (14) are fitted together, and a pin (15) is inserted through the two sets of pin seats (14).

5. The silk weaving wastewater treatment device according to claim 4, characterized in that: It also includes a water-blocking mechanism (6), which includes a strip groove (61) opened at the bottom of the inner side of the pretreatment tank (3). The strip groove (61) is set close to the sludge collection box (12). A water baffle (62) is slidably installed inside the strip groove (61). The water baffle (62) protrudes from the bottom of the inner side of the pretreatment tank (3) and its cross section is wedge-shaped. At least two sets of return springs (63) are fixedly installed between the bottom of the water baffle (62) and the bottom of the inner side of the strip groove (61).

6. The silk weaving wastewater treatment device according to claim 5, characterized in that: The sedimentation filter box (1) is provided with a quartz sand filter layer (7) in the middle section. The quartz sand filter layer (7) is fixedly installed on the inner walls of the sedimentation filter box (1). The upper part of the quartz sand filter layer (7) is the sedimentation chamber, and the lower part of the quartz sand filter layer (7) is the disinfection chamber. The quartz sand filter layer (7) includes a filter box body (71). The top of the filter box body (71) is inclined and fixed with an inclined water passage cover plate (72) by bolts. The water passage cover plate (72) and the bottom of the filter box body (71) are both provided with densely distributed water passage holes (73). The filter box body (71) is filled with quartz sand.

7. The silk weaving wastewater treatment device according to claim 6, characterized in that: A drain pipe (8) is fixedly installed between the bottom of the biological treatment tank (2) and the top of the sedimentation filter tank (1). The upper and lower ends of the drain pipe (8) are connected to the interior of the biological treatment tank (2) and the sedimentation filter tank (1), respectively. A drain solenoid valve (9) is fixedly installed on the drain pipe (8). At least two sets of support columns (10) are fixedly installed between the top of the sedimentation filter tank (1) and the bottom of the biological treatment tank (2).

8. The silk weaving wastewater treatment device according to claim 7, characterized in that: A sludge discharge pipe (16) communicating with the sedimentation chamber is fixedly installed on one side of the outer surface of the sedimentation filter box (1), and a sludge discharge valve (17) is fixedly installed at the tail end of the sludge discharge pipe (16).

9. A silk weaving wastewater treatment device according to claim 8, characterized in that: At least two sets of ultraviolet lamps (18) are fixedly installed on the bottom inner side of the disinfection chamber of the sedimentation filter box (1).

10. A silk weaving wastewater treatment device according to claim 9, characterized in that: The top of the pretreatment tank (3) is fixedly installed with an inlet pipe (19) that communicates with its interior. The outer surface of the sedimentation filter tank (1) on the other side is fixedly installed with a recovery pipe (20) that communicates with the disinfection chamber. A return water solenoid valve (21) is fixedly installed on the recovery pipe (20).

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